Valve for milk vats



23 19 Aug 27 D. A. MAANUM VALVE rjoR MILK vATs Filed July 23, 192e 2 sheets-snee*v 1 Aug. 23, 1927.

DLA. MAANUM VALVE FOR MILK VATS 'Filed July 23, 192s 2 sheets-snee: 2

aug. 23,1927. j Y .n Y j 1 1,639,853

nutren STATES Parr-:suf orties.

DEDRICK A. MAANUIVI, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF ONE-FOURTH TO ANTON A. MAANUM AND ONE-FOURTH TO .THOR Ai MAANUM, BOTH OF.1VIINNE- APOLIS, MINNESOTA.

VALVE FOR MILK VATS.

Application led July 23, 1926. Serial No. 124,378.

This invention relates toa valve and while which like reference characters refer to simi- 55 the valve applicable to various devices, it lar parts throughout the several views and particularly is designed for use with vats in which or containers adapted to contain milk or Fig. l is a central vertical section through cream. Such vats are now commonly used the valve and a portion of the vat, with in dairy establishments of various kinds. which it is connected; 60 T he structure of such valves must conform Fig. 2 is a vertical section taken on line to speciiications and regulations established 2*2 of Fig l as indicated by the arrows; by the State. Some of the common reand "J quirements are that the valve should contain Fig. 3 is a view similar to Fig. l, showing no recesses in which the milk or cream can a modified form of valve. 65 lodge and become unsanitary, and that the Referring to the drawings, particularly shut-off point for the milk or cream be sub- Figs. l and 2, a vat or container for milk stantially alined with or within the wall of or cream is illustrated as, the same hav the container or vat. ing a sidewall 5 and the bottom portion 5b.

It is m Objgot, of this invention, thorerIfhe container is also shown as having a 70 fore, to provide a valve having no recesses llning, which lining at one corner is engaged or corners therein, in the passage for the by an'outlet .member 6. The valve has a fluid therethrough, which might collect the body 7 having a portion 7at adapted to exmilk or Cream, tend into the wall 5a through an opening It is a further object of the invention to therein and the saine is shown as having a 75 -pl-0vde a, Valve having L passage leadinof reduced end 7b extending into the opening from the container and having a shut-0% 111 the member 63 The end ofthe portion point vor plane disposed substantially in line 7b 1S fitted very tightly against the end .Of

with the wall of the vat, the opening in the member 6 and in order It is still another object of the invention that this portion may engage the member 6 80 to provide a. valve having a body portion the shoulder 7 formed between portions 7b adapted to be secured to the wall of the vat and 7 is spaced from the member 6. The and having a portion extending into said bOdy 7 has an elongated bore 7K1 extending 3o wall, said body portion vhaving a bore, and therethrough which bore extends into the the portion extending into the vat having portion 7a and said pOltOIl and POltOll 7b 85 a reduced passage communicating with the have a reduced passage 7e extending to the vat forming a shoulder in Said bore7 toend thereof and COliiliiunicating with the ingether'with a plunger fitting said bore and teIiOr of the vat or container 5. The pasd having a face adapted to seat against said sage 7e forms a shoulder 7f at its outer end shoulder, said bore having a lateral outlet WhCh JODS the Wall 0f the bOle 7d PIBGI'- 90 opening extending therefrom adapted to be ably by the inclined surface 7g. The body 7 covered by said plunger. has a flange 7h adapted to fit against the t is still another object of the invention Outer Side 0f the wall 5L and t0 be secured 40 to provide such a valve as set forth in the thereto by suitable screws 8 extending preceding paragraph, in which means are through holes in said flange, a gasket 9 pref- 95 provided for advancing and retracting said erably being disposed between the outer side plunger to close and openthe valve respecof the wall and flange 7h. The body 7 has tively, which means may include a'stem hava downwardly or laterally projecting arm ing a threaded portion at` its outer end and or nipple 71 having an outlet opening therea longitudinally stationary but --revoluble through communicating with the bore 7d, 10o

nut engagino' said threaded portion for parwhich arm is threaded at its lower end for tially retracting said plunger whereby said receiving any suitable connection. The stein may be grasped and the plunger' body-7 has an enlarged bore at its outer end quickly retracted or advanced by hand. in which is disposed the sleeve 10 having a rlihese and other objects and advantages bore of the same Vdiameter as the bore 7d. A 105 of the invention will be yfully set forth in packing ring llpof suitable packing material the following description made in connecpreferably rubber is disposed between vthe 111,- tion with the accompanying drawings, in ner end of the sleeve l0 andthe shoulder formed between the bores in the body 7. The outer end of the body 7 is threaded to receive a cap member 12 extending across the end ot said body and engaging the sleeve 10, which cap member forces the sleeve inwardly against the packing 11. The cap member has a cylindrical and shouldered recess in which disposed the inner end of the nut 13, said nut having an enlarged head at its inner slde iitting in said recess and having its outer end projecting outward of cap 12. The hand wheel 1a is keyed tothe nut 13 so as to turn the same, it being noted that said nut will thus be held from longitudinal movement.` la plunger.15isprovidedoitcyllinl-l drical :form and snugly fitting in the bores 7b and that ot sleeve 10, which plunger ha on its 'front end or face a disk 16 of some sott metal, such as tin, which disk is held in place by the central screw 16a threaded into the end of said plunger. The plunger at its outer end has secured therein the threaded end of the stem 17, which stem extends outward through the nut 13, said stein being smooth for the greater part ot its length. but having threads 17"y formed for short distance at the outer end thereof, adapted to co-operate with the threads for ned on the interior of the nut 13.

ln operation, when the valve is to be closed, the outer end ot stem 17 will be engaged manually and pushed inwardly until the inner end otl the threads 17'.a will be engaged by the nut 13. rlChe hand wheel 14 will then be turned and the nut will engage threads 17 and move the plunger forward inwardly until the disk 16 will engage the shoulder 7i when the valve will be tightly closed. lt will be noted that the plane of the shoulder if is substantially alined with the inner wall of the vat a. The vat is thus closed by a ilatsurtace and there will be no milk or cream outside of the plane or' the shoulder 'Tf and the milk or cream in the vat has free aecess to that in the passage 7e. This is in strict accordance with the requirements now made in many States. It will be noted that the outlet through the portion 7i is also closed by the plunger when the passage '7e is closed. llihen the valve is to be opened, the hand wheel 1awill be turned in a reverse direction. This will move stem 17 and plunger 15 outwardly until the threads 17a move out of the nut 13. The stem can then be engaged manually and the valve 15 pulled quickly outwardly. The valve can thus be operated much more quickly than ifit were moved allthe way by the screw threads. The sleeve and packing 11 are provided to positively insure that no milk or cream can ever find its way to the outer end of the body 7. However, the fit of the plunger in the bore of the valve is quite close and no appreciable amount/of milk or Lcream can pass the plunger.

In the modification shown in Fig. 3 a vat is shown having an inner wall 2O and an outer wall 21 between which insulation will be placed. The vat has an outlet member 22 disposed at one corner thereof having an outlet passage therethrough. The valve has a. body 23 having a portion 23arextending into the wall oli the vat or into the space between the wallsv and 21.V The ends ot i'iiemer 22 and ot portion 23 are in close relation and said members have bores ot the same diameter therein in which a bushing or sleeve 24- is disposed. This sleeve will be sweated into both members and vwill closely abut orilt agai'nstthe eudo the bore in the member 23a as shown. rlhe body 23 has a bore 23b therein of larger diameter than the passage through member 23a and forming therewith th shoulder 23C. l The body 23 has a flange 23d thereon adapted to fit iat against the outer side of thevat or wall 21 and a gasket 25 preferably being inserted between the ilange 23d and' wall 21. The valve is held in position by the bolts 26 passing through the flange 23d, the wall 2l. and the collar 29iitting over the portion 23n and engaging the inner side of wall 21. The body 23 has a downwardly or laterally projecting arm 23e having a passage theren through communicating with the bore 23, the outer end of arm Y23e being eXteriorly threaded to'ree-eive any suitable connection. The outer end of body 23 is threaded to receive a cap member 23 and said body portion has an enlarged bore in its outer endY in which lits the sleeve 29, the outer end ot which is engaged by the cap 28, whereby said sleeve is 'forced inwardly against a packing ring 30 preferably of rubber disposed against the shoulder between the two bores in the body 23. The cap 28 has an outer portion 28L which lmay be made of hexagonal shape for convenience in turning said'cap. The sleeve 29 has a bore therein of the same diameter as the bore 23".

The cap 28 has a central opening with an enlarged recess atits inner side in which is disposed a nut 31 having an enlarged dameter or head at its inner side seated in the recess in cap 28, the said nut projecting outwardly from said cap. The nut 31 has a hand wheel 32 keyed thereto whereby said nut may be turned. An elongated plunger 33 fits in and is slidable in. the bore 23b and the bore of sleeve 29, said plunger having a disk 33 ot some sott metal such as tin seated in its inner tace and yheld in place therein bythe central screw 311 thread-ed into the inner end 'ot said plunger'. The plunger 33 has a stem threaded into its outer end which stem is exteriorly threaded and pro- Y iects through and engages the threads on the inner side of nut 31.

lln y operation, when the valve is to be closed, the wheel 32 will be turned and will A plunger 33 also closeswthe outletv throughA in turn rotate nut 3l. The nut is heldi'from longitudinal movementand'stem 35 is thus-V the member Q2 and member 24 is in direct` communicationW-ith that -in-theiv'at. The

arm 23e. The valve may be opened vby turning xvheeli32 in the; oppositev direction when stem 351 will Withdraw the plunger 33. The threads on the stem 35 andthe nut 31 preferably` are left-handed.

From the abo-ve description it is seen that applicant has provided a ivery simple and ciiicient structure of valve, particularly adapted for a vat or container for milk or cream. 'Ehe closure is easily and positively made and there are no recesses or corners in Which the milk or cream may lodge and thus become unsanitary. The structure of the valve is quite simple and the parts are easily made and assembled. The valve can also be easily and readily cleaned and there are no recesses or corners difficult of access. The device has been amply demonstrated in actual practice and found to be very successful and eflicient. y

It Will, of course, be understood that various changes may be made in the form, details, arrangement and proportions of the parts, Without departing from the scope of applicants invention, which, generally stated, consists in a device capable of carrying out the objects above set forth, in the novel parts and combinations of parts disclosed and defined in the appended claims.

What is claimed is:

1. A valve for a milk vat or other container having a body With means for attachment to said vat, said body portion having an elongated bore With a shoulder therein substantially alined with the Wall of said vat, a passage extending from said bore into said vat, said body having an outlet opening at one side of said bore, a plunger movable in said bore over said opening and against said shoulder, a stem secured to said plunger having a smooth portion and threaded at the outer end thereof, a revoluble nut at the outer end of said body through Which said stem projects, and means :for turning said nut to move said threaded portion therethrough whereby said stem may then be engaged manually and said plunger manually moved.

2. A valve for a milk vat or other container having a body With means for attachnient to said-vat, said body portion having an elongated'bore With a shoulder therein substantially alinedavith the -vali ol' said vat, a passage extending from said bore intol said vat, saidfbodyhaving an outletvopening at one side of said bore, a cap threaded on 'the outer end of said body, a nut revolubly mounted in said cap and held from longitudinal movement therein, aplunger mdvable in said bore adapted to engage said shoulder and move over said outlet opening, a stem projecting from the outer end of said plunger and extending through said nut and a hand wheel secured'to said nut for turning the same and moving said plunger.

3. A valve for-a milk vat or other container having a body. with means 'for attachment to said vat, said body portion having an elongated bore With a shoulder therein substantially alined With the Wall of said vat, a passage extending :from said bore into said vat, said body having an enlarged bore at its outer end forming a shoulder at its inner end, a cap threaded on the outer end of said body, a sleeve fitting iny said enlarged bore and having its outer end engaged by said cap, a packing surrounding said plunger and engaging said last mentioned shoulder and engaged by the inner end of said sleeve, said sleeve having a bore of the same diameter as said first mentioned bore, a cylindrical plunger movable in said first mentioned bore and sleeve and means at the outer end of said body for non-rotatably advancing and retracting said lunger.

4f. A valve or a milk vat or similar container comprising a body adapted to be secured to the Wall of said container and having a portion extending into said Wall, said body portion having an elongated bore extending into said portion, said bore having a reduced passage extending into the container having its bottom flush with the bottom of said container and forming a shoulder in said bore, a plunger fitting and movable in said bore and having a face portion adapted to engage said shoulder and close the passage from said container, means connected to one end of said plunger for non-rotatably moving said plunger to engage said shoulder, csaid valve having an outlet opening extending from one side of said body and bore, over which said plunger moves and which is opened or closed by said plunger, and means for packing said plunger between said outlet opening and the outer end of said bore.

5. A valve for a milk or other vat having' a wall comprising a body portion extending into said Wall, said body having means for attachment to the outer side of said Wall and having a bore therein extending into said portion, said portion having a reduced passage extending into said container and forming a shoulder in said bore alined substantially with the inner Wall of said Vat, an elongated plunger movable in said bore having a seating face at its inner end adapted to engage said shoulder, said valve havingan @met opening etY Quesiti@V orv Said body and bore over which said plunger moves, said body portion having a circumferential shoulder' between said outlet opening and the outer end of said bore, a packing engaging said shoulder and surrounding said plunger, a sleeve in said bore engaging said packing, and a cap secured to the outer end of said body engaging the end of said sleeve to force the same against said packing, Lrevoluble means in said cap,fand means secured to the outer end of said plunger engaged by said revoluble means for non-rotatably advancing and retracting said plunger.

6. A valve for a milk or other vat having a Wall comprising a body portion extending into said Wall, said body having means for attachment to the outer side of said Wall and having a bore therein extending into said portion, said portion having a reduced pas-V sage extending into said container and ormelongatedplunger movablein saidborehavW ing a seating ace at its inner end adapted to engage said shoulder, said valve having an outlet opening at one side of said body and bore over Which said plunger moves, said body portion having a circumferential shoulder between said outlet opening and the outer end of said bore, a p cking engaging said shoulder and surrounding said plunger, a sleeve in said bore engaging said packing, a cap threaded on the outer end of said body, a nut revolubly mounted in said cap, a revoluble hand Wheel secured to said nut` and a threaded stem secured to said plunger and extending through lsaid nut, whereby said plunger may be advanced and retracted.

In testimony whereof I alhx my signature.

DEDRICK A. MAANUM.

ing a shoulder in said bore alined substantially Vwith theV o-fsaicvatg'ani' f 

